Is there a way to put chain snippet hotspot in a list hotspot?

[cricrazy]

Let me explain:

I have several string related snippets tarting with str

strlen
strtrim
strjoin

• I would like List hotspot to trigger those using a trigger str.
• Based on my selection using up/down arrow keys, I would like Chain snippet hotspot to trigger this individual snippet.

Here is the workflow:

1. I trigger the all string commands with str trigger.
2. I select one of the listed commands and press enter or tab to chain trigger that command.

Here are my failed attempts.

Trigger Text: str

Scope: GLOBAL

$[![(lis)$[![(cha)strlen]!]|$[![(cha)strtrim]!]]!]
[>END<]